Methods
(static) assign(target, source) → {Object}
Assigns the source's own fields and properties to the target.
Parameters:
Name | Type | Description |
---|---|---|
target |
Object | The object to store the properties and fields |
source |
Object | The object from which to assign. |
Returns:
The now modified target
- Type
- Object
(static) create(object) → {Object}
Creates a new empty object whose __proto__ is the parameter.
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | The object to serve as the new object's __proto__ |
Returns:
A newly created object with the __proto__ set to the parameter.
- Type
- Object
(static) defineProperties(object, propDescriptions) → {Object}
Adds fields or properties to an object and returns it. This modifies the Object in place.
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | The object to modify. |
propDescriptions |
Object | An object containing keys whose values are objects containing either a value field, or get and/or set fields with Function values. If the get and set fields do not contain a Function, an error is thrown. Likewise, if propDescriptions' keys don't refer to an Object, an error is thrown. |
Returns:
The modified Object
- Type
- Object
(static) defineProperty(object, propName, propData) → {Object}
Similar to defineProperties but only defines one field or property at a time. This modifies the Object in place.
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | The object to add the field or property to |
propName |
String | The name of the property |
propData |
Object | An Object containing a value, or get and/or set fields. |
Returns:
The modified Object
- Type
- Object
(static) entries(object) → {Array.<Array>}
Get the key-value entries of an object
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | The object to get the key-value entries from |
Returns:
An Array of length-2 Arrays whose first element is the key and second element associated value.
(static) fromEntries(entries) → {Object}
Create a new Object from an Array of key-value Arrays.
Parameters:
Name | Type | Description |
---|---|---|
entries |
Array.<Array> | An Array whose elements should be Arrays containing two values, the first element being a key, and the second the corresponding value |
Returns:
A new Object created from the key value pairs.
- Type
- Object
(static) getOwnPropertyDescriptor(object, propName) → {Object}
Look for a specific property on the Object without searching the prototype chain.
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | The Object to search |
propName |
String | The name of the property |
Returns:
an Object containing a possible get or set or value field, or an empty Object.
- Type
- Object
(static) getOwnPropertyDescriptors(object) → {Object}
Get all property and field descriptors from an Object.
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | An Object |
Returns:
An Object containing keys for each field or property, whose values are an Object with a value, or get and/or set
field.
- Type
- Object
(static) getOwnPropertyNames(object) → {Array.<String>}
Gets an Array of all property and field names. These values are unique.
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | An Object |
Returns:
A list of unique property names.
(static) is(obj1, obj2) → {boolean}
Tests if two reference types refer to the exact same Object in memory.
Parameters:
Name | Type | Description |
---|---|---|
obj1 |
Object | Any Object |
obj2 |
Object | Any Object |
Returns:
True if the objects are referring to the same memory location, otherwise false.
- Type
- boolean
(static) keys(object) → {Array}
Return an array of all the keys in the specific object. Does not recursively search prototype chain.
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | The object whose keys to get |
Returns:
An array of all string keys in no specific order
- Type
- Array
(static) setPrototypeOf(object, prototype) → {Object}
Sets the __proto__ of an Object and returns the Object
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | An Object whose __proto__ to set |
prototype |
Object | The new __proto__ of the Object |
Returns:
The first parameter
- Type
- Object
(static) values(object) → {Array}
Returns an array of all values contained in an object. Does not recursively search prototype chain.
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | The object whose values to return |
Returns:
An array of values in no specific order
- Type
- Array
hasOwnProperty(propName) → {boolean}
Tests if this Object has a given field or property without searching the prototype chain.
Parameters:
Name | Type | Description |
---|---|---|
propName |
String | The name of the property |
Returns:
True if this Object has the field or property, otherwise false.
- Type
- boolean
isPrototypeOf(object) → {boolean}
Tests whether or not this Object is the __proto__ of another Object
Parameters:
Name | Type | Description |
---|---|---|
object |
Object | The Object whose __proto__ might be this Object |
Returns:
True if this Object is the __proto__ of the parameter, otherwise false
- Type
- boolean
toString() → {String}
Returns a String representation of this Object. This method is available to all complex types that
derive from Object, such as Array and Function.
Returns:
A String representation of this Object
- Type
- String